A protester wears a pig mask as he marches through the streets of downtown Vancouver with thousands of people participating in the Occupy Vancouver protest on October 15, 2011 in Vancouver, British Columbia, Canada. Thousands of people are taking to the streets in cities across the world today in demonstrations inspired by the Occupy Wall Street protest in New York City. An estimated 2,000 people participated in the Vancouver occupation. (Photo by Jeff Vinnick/Getty Images)

The sun rises between Sgurr nan Gillean and Knight’s Peak, Black Cuillin, Isle of Skye. (Photo by Adrian Trendall/Mountain Photo of the Year)

A woman struggles with an umbrella in the wind and rain while walking in Derby city centre, on December 23, 2013. (Photo by Rui Vieira/PA Wire)

Cake made by Gisela Prekau on display at the Cake International show at Alexandra Palace in London, UK on April 22, 2017. Cake International 2017, the Cake Decorating and Baking Show, takes place over the weekend at Alexandra Palace, North London featuring giant cakes, moving cakes, stunning crafter cakes, exquisitely detailed cakes and the latest ranges of cake decorating products and accessories, college displays and workshops. (Photo by Dinendra Haria/Rex Features/Shutterstock)

Demonstrators take part in a protest aimed at showing London's solidarity with the European Union following the recent EU referendum, inTrafalgar Square, central London, Britain June 28, 2016. (Photo by Dylan Martinez/Reuters)

Actors portraying "corrupted people" participate in the "Unmask the Corrupt" event, organized by the Transparency International non-governmental organization to create awareness on corruption, in Lima, November 12, 2015. (Photo by Mariana Bazo/Reuters)

A demonstrator dressed as Santa Claus holds up a flag as a riot police vehicle releases a jet of water during a protest against the private system of pension fund administrators in Santiago, Chile, December 10, 2015. The flag reads “Classist Workers Union”. (Photo by Ivan Alvarado/Reuters)

A partially burned American flag lies on the street near the spot where Michael Brown was killed before an event to mark the one year anniversary of his killing in Ferguson, Missouri August 9, 2015. (Photo by Rick Wilking/Reuters)